How to use getImgDataDataFromContext method in backstopjs

Best JavaScript code snippet using backstopjs

ImageScrubber.js

Source:ImageScrubber.js

...152        console.error(error);153      });154      worker.postMessage({155        divergedInput: [156          getImgDataDataFromContext(imageToCanvasContext(refImg)),157          getImgDataDataFromContext(imageToCanvasContext(testImg)),158          h,159          w160        ]161      });162    }163    const dontUseScrubberView = this.state.isRefImageMissing || !hasDiff;164    const showIsolatedRefImage = !hasDiff && scrubberModalMode === 'SHOW_SCRUBBER_REF_IMAGE';165    const showIsolatedTestImage = !hasDiff && scrubberModalMode === 'SHOW_SCRUBBER_TEST_IMAGE';166    return (167      <div>168        <WrapTitle>169          {hasDiff && (170            <div>171              <ScrubberViewBtn...

browser.js

Source:browser.js

...35    const img1Ctx = imageToCanvasContext(img1);36    const img2Ctx = imageToCanvasContext(img2);37    const pixelmatchResultImgData = getEmptyImgData(h, w);38    pixelmatch(39        getImgDataDataFromContext(img1Ctx),40        getImgDataDataFromContext(img2Ctx),41        pixelmatchResultImgData.data,42        w,43        h, 44        { threshold: .1, includeAA: true }45    );46    console.time("pixelmatchResult");47    const pixelmatchResult = imageToCanvasContext(null, w, h);48    pixelmatchResult.putImageData(pixelmatchResultImgData, 0, 0);49    console.timeEnd("pixelmatchResult");50    console.time("diverged");51    const divergedImgData = diverged(getImgDataDataFromContext(img1Ctx), getImgDataDataFromContext(img2Ctx), h, w);52    console.timeEnd("diverged");53    // lcsImgData.data = divergedImgData;54    console.time("imgDataTolcsImgData");55    let clampedImgData = getEmptyImgData(h, w)56    for (var i = divergedImgData.length - 1; i >= 0; i--) {57        clampedImgData.data[i] = divergedImgData[i];58    }59    var lcsDiffResult = imageToCanvasContext(null, w, h);60    lcsDiffResult.putImageData(clampedImgData, 0, 0);61    console.timeEnd("imgDataTolcsImgData");62    // console.log('lcsDiffResult>>>', clampedImgData);63    console.timeEnd("total_time");64    document.getElementById('refImage').src = img1Ctx.canvas.toDataURL("image/png");65    document.getElementById('testImage').src = img2Ctx.canvas.toDataURL("image/png");66    document.getElementById('pixelmatch1').src = pixelmatchResult.canvas.toDataURL("image/png");67    // document.getElementById('pixelmatch2').src = pixelmatchResult.canvas.toDataURL("image/png");68    document.getElementById('lcsResult').src = lcsDiffResult.canvas.toDataURL("image/png");69}70/**71 * ========= HELPERS ========72 */73function getImgDataDataFromContext(context) {74    return context.getImageData(0, 0, context.canvas.width, context.canvas.height).data;75}76function getEmptyImgData(h, w) {77    var o = imageToCanvasContext(null, h, w);78    return o.createImageData(w, h);79}80function imageToCanvasContext(_img, w, h) {81    let img = _img;82    if (!_img) {83        img = { width: w, height: h };84    }85    const canvas = document.createElement("canvas");86    canvas.width = img.width;87    canvas.height = img.height;...

Using AI Code Generation

1var fs = require('fs');2var path = require('path');3var PNG = require('pngjs').PNG;4var pixelmatch = require('pixelmatch');5var backstopjs = require('backstopjs');6var config = require('./backstop.json');7var imgData = backstopjs.getImgDataFromContext(config.scenarios[0].referenceUrl);8console.log(imgData);9{10    {11    },12    {13    },14    {15    }16    {17    }18  "paths": {19  },20  "engineOptions": {21  },22}23### backstop(referenceConfig, testConfig, options)

Using AI Code Generation

1const fs = require('fs');2const path = require('path');3const backstop = require('backstopjs');4const { getImgDataFromContext } = require('backstopjs/core/util/getImgDataFromContext');5const { getScreenshot } = require('backstopjs/core/util/getScreenshot');6const { getDocumentDimensions } = require('backstopjs/core/util/getDocumentDimensions');7const { getViewportDimensions } = require('backstopjs/core/util/getViewportDimensions');8const { getDeviceMetrics } = require('backstopjs/core/util/getDeviceMetrics');9const { getScrollPositions } = require('backstopjs/core/util/getScrollPositions');10const { getScrollPosition } = require('backstopjs/core/util/getScrollPosition');11const { getDevicePixelRatio } = require('backstopjs/core/util/getDevicePixelRatio');12const { getPixelRatio } = require('backstopjs/core/util/getPixelRatio');13const { getDocumentHeight } = require('backstopjs/core/util/getDocumentHeight');14const { getDocumentWidth } = require('backstopjs/core/util/getDocumentWidth');15const { getViewportHeight } = require('backstopjs/core/util/getViewportHeight');16const { getViewportWidth } = require('backstopjs/core/util/getViewportWidth');17const { getDeviceScaleFactor } = require('backstopjs/core/util/getDeviceScaleFactor');18const { getDeviceName } = require('backstopjs/core/util/getDeviceName');19const { getBrowserName } = require('backstopjs/core/util/getBrowserName');20const { getBrowserVersion } = require('backstopjs/core/util/getBrowserVersion');21const { getBrowserUserAgent } = require('backstopjs/core/util/getBrowserUserAgent');22const { getBrowserPlatform } = require('backstopjs/core/util/getBrowserPlatform');23const { getBrowserViewport } = require('backstopjs/core/util/getBrowserViewport');24const { getBrowserFullPage } = require('backstopjs/core/util/getBrowserFullPage');25const { getBrowserCookies } = require('backstopjs/core/util/getBrowserCookies');26const { getBrowserHeaders } = require('backstopjs/core/util/getBrowserHeaders');27const { getBrowserHost } = require('backstopjs/core/util/getBrowserHost');28const { getBrowserUsername } = require('backstopjs/core/util/getBrowserUsername');29const { getBrowserPassword } = require('backstopjs/core/util

Using AI Code Generation

1const fs = require('fs');2const path = require('path');3const backstopjs = require('backstopjs');4const backstopConfig = require('./backstop.json');5const backstop = backstopjs.default;6const engine = backstopjs.engine;7const config = backstopjs.config;8const scenario = backstopjs.scenario;9const reference = backstopjs.reference;10const test = backstopjs.test;11const approve = backstopjs.approve;12const reject = backstopjs.reject;13const openReport = backstopjs.openReport;14const openMismatchesReport = backstopjs.openMismatchesReport;15const approveAll = backstopjs.approveAll;16const rejectAll = backstopjs.rejectAll;17const init = backstopjs.init;18const remote = backstopjs.remote;19const docker = backstopjs.docker;20const help = backstopjs.help;21const version = backstopjs.version;22const _ = require('lodash');23const getImgDataDataFromContext = require('./getImgDataDataFromContext');24const { PNG } = require('pngjs');25const pixelmatch = require('pixelmatch');26const { createCanvas } = require('canvas');27const { Canvas, Image } = require('canvas');28const { JSDOM } = require('jsdom');29const { window } = new JSDOM();30const { document } = (new JSDOM('')).window;31global.document = document;32const canvas = createCanvas();33const context = canvas.getContext('2d');34const img = new Image();35const img2 = new Image();36const img3 = new Image();37const img4 = new Image();38const img5 = new Image();39const img6 = new Image();40const img7 = new Image();41const img8 = new Image();42const img9 = new Image();43const img10 = new Image();44const img11 = new Image();45const img12 = new Image();46const img13 = new Image();47const img14 = new Image();48const img15 = new Image();49const img16 = new Image();50const img17 = new Image();51const img18 = new Image();52const img19 = new Image();53const img20 = new Image();54const img21 = new Image();55const img22 = new Image();56const img23 = new Image();57const img24 = new Image();58const img25 = new Image();59const img26 = new Image();60const img27 = new Image();

Using AI Code Generation

1var backstopjs = require('backstopjs');2var fs = require('fs');3var path = require('path');4var fileName = 'google';5var filePath = path.join(__dirname, fileName + '.png');6var viewPort = {7};8var config = {9        {10        }11    "paths": {12    },13};14backstopjs('reference', { config: config })15    .then(function () {16    return backstopjs('test', { config: config });17})18    .then(function (compareResults) {19    var results = compareResults[0].compareJson;20    backstopjs('openReport', { config: config });21    if (results.failures.length === 0) {22        console.log('Passed');23        return;24    }25    console.log('Failed');26    var failedTests = results.failures.map(function (test) {27        return {

Using AI Code Generation

1var getImgDataDataFromContext = require('backstopjs/core/util/getImageDataFromContext.js');2var fs = require('fs');3var image = fs.readFileSync('./test.png');4var image = new Buffer(image, 'base64');5getImgDataDataFromContext(image, function (err, data) {6    console.log(data);7});8var getImgDataFromBase64 = require('backstopjs/core/util/getImgDataFromBase64.js');9var fs = require('fs');10var image = fs.readFileSync('./test.png');11var image = new Buffer(image, 'base64');12getImgDataFromBase64(image, function (err, data) {13    console.log(data);14});15var getImgDataFromUrl = require('backstopjs/core/util/getImgDataFromUrl.js');16var fs = require('fs');17var image = fs.readFileSync('./test.png');18var image = new Buffer(image, 'base64');19getImgDataFromUrl(image, function (err, data) {20    console.log(data);21});22var getImgDataFromPng = require('backstopjs/core/util/getImgDataFromPng.js');23var fs = require('fs');24var image = fs.readFileSync('./test.png');25var image = new Buffer(image, 'base64');26getImgDataFromPng(image, function (err, data) {27    console.log(data);28});29var getImgDataFromJpg = require('backstopjs/core/util/getImgDataFromJpg.js');30var fs = require('fs');31var image = fs.readFileSync('./test.png');32var image = new Buffer(image, 'base64');33getImgDataFromJpg(image, function (err, data) {34    console.log(data);35});

Using AI Code Generation

1var getImgDataDataFromContext = require('backstopjs/core/util/getImageDataFromContext');2var canvas = document.getElementById("canvas");3var ctx = canvas.getContext('2d');4var imgData = getImgDataDataFromContext(ctx);5console.log(imgData);6var canvas = document.getElementById("canvas");

Using AI Code Generation

1var imgData = require('backstopjs').getImgDataDataFromContext(context);2console.log(imgData);3{4    {5    },6    {7    },8    {9    },10    {11    }12    {13    }14}

Using AI Code Generation

1const fs = require('fs');2const {getImgDataFromContext} = require('backstopjs');3const puppeteer = require('puppeteer');4const path = require('path');5const PNG = require('pngjs').PNG;6const pixelmatch = require('pixelmatch');7(async () => {8    const browser = await puppeteer.launch();9    const page = await browser.newPage();10    const canvas = await page.evaluate(() => {11        const canvas = document.createElement('canvas');12        canvas.width = 1920;13        canvas.height = 1080;14        const ctx = canvas.getContext('2d');15        ctx.drawImage(document.querySelector('#hplogo'), 0, 0);16        return canvas.toDataURL('image/png');17    });18    const imgData = await getImgDataFromContext(canvas);19    const png = new PNG({ width: 1920, height: 1080 });20    png.data = imgData;21    png.pack().pipe(fs.createWriteStream(path.join(__dirname, 'test.png')));22    await browser.close();23})();

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